Print inspection and reprint apparatus

ABSTRACT

Print inspection and reprint apparatus for cooperation with a photographic printer wherein negatives in a roll of spliced film orders are advanced stepwise into the exposure station of the photographic printer in synchronization with the continuous advancement of finished photographic prints on a print roll through a print inspection station. The operator of the inspection apparatus inspects the prints as they advance continuously through the print inspection station, halts the advancement of unacceptable prints in the print inspection station, marks such unacceptable prints and reprints, with appropriate exposure correction, the corresponding negative located in the exposure station of the photographic printer. The prints continuously move through the inspection station at a variable, operator controlled speed. The stepwise negative advancement synchronized to the continuous advancement of the prints is controlled by a circuit responsive to print marks and order separation marks on the prints and splices attaching ends of successive negative filmstrips. Synchronization is maintained under conditions including: (1) full orders of prints and negatives; (2) two prints per negative; (3) fewer prints than negatives; and (4) fewer negatives than prints. When the photographic print material is exhausted in the printer, it is developed, and the remake prints may be synchronized to the original print orders to complete the customer print orders.

United States Patent 1 Breimayer [54] PRINT INSPECTION AND REPRINT APPARATUS [75] Inventor: Joseph F. Breimayer, Rochester.

NY. [73] Assignee: Eastman Kodak Company, Rochester,N.Y.

[22] Filed: Mar. 15,1972

21 Appl. No.: 234,799

Primary ExaminerAllen N. Knowles Att0rneyW. H. J. Kline et al.

[57] ABSTRACT Print inspection and reprint apparatus for cooperation with a photographic printer wherein negatives in a roll 1 May 15, 1973 of spliced film orders are advanced stepwise into the I tinuously through the print inspection station, halts the advancement of unacceptable prints in the print inspection station, marks such unacceptable prints and reprints, with appropriate exposure correction, the corresponding negative located in the exposure station of the photographic printer. The prints continuously move through the inspection station at a variable, operator controlled speed. The stepwise negative advancement synchronized to the continuous advancement of the prints is controlled by a circuit responsive to print marks and order separation marks on the prints and splices attaching ends of successive negative filmstrips. Synchronization is maintained under conditions including: (1) full orders of prints and negatives; (2) two prints per negative; (3) fewer prints than negatives; and (4) fewer negatives than prints. When the photographic print material is exhausted in the printer, it is developed, and the remake prints may be synchronized to the original print orders to complete the customer print orders.

10 Claims, 3 Drawing Figures PATENTEBMYISISYS 3.733.018

SHEET 1 UF 2 58*? FIG.2

\ SLIP CLU TCH PATENTEUHAY 1 H975 SHEET 2 OF 2 mOkomhmo wojmw ON I PRINT INSPECTION AND REPRINT APPARATUS CROSS REFERENCE TO RELATED APPLICATION Reference is made to commonly assigned copending U.S. Patent application Ser. No. 234,751 entitled METHOD: AND APPARATUS FOR INSPECTION OF PHOTOGRAPHIC PRINTS, filed concurrently herewith in the name of Raymond J. Williams.

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to photographic apparatus, and more particularly'to a photographic printer adapted for the inspection of finished photographic prints and the reprinting in the photographic printer of those originals from which unsatisfactory prints have been made with a corrected exposure based on the assessment made of the unsatisfactory print.

2. Description of the Prior Art It has become a customary practice of the photofinishing industry to provide apparatus for splicing the ends of individual customer film order negative filmstrips together and continuously processing the spliced negative filmstrips. The spliced filmstrips are thereafter spooled and placed on a photographic printer for automatic or semi-automatic printing of each negative on a continuous roll of photosensitive photographic print material. The sensitized photographic print material is thereafter developed and dried in a continuous process. Each print in the roll is thereafter inspected to determine if it is a commercially acceptable print. Overexposed, under-exposed or color subject failure prints are printed adjacent a selected print of each print order to separate print orders.

Among the proposals that have been made to improve and complete the automation of the process of inspecting and reprinting originals or negatives is that apparatus disclosed in U.S. Pat. No. 3,516,741, entitled APPARATUS FOR MAKING PRINTS FROM COLOR NEGATlVES, to Kurt Thaddey, wherein an inspection table is disclosed including a viewing station for examining the prints made from the negatives and means for feeding the prints stepwise past the viewing section in synchronism with the stepwise passage of corresponding negatives a second time through the printer for re-exposure at the exposure station of any of the negatives from which unsatisfactory prints have been made. Furthermore, manually operable means are coupled to the exposure control means of the printer to supply exposure correction information thereto in accordance with the assessment made of an unsatisfactory print by the person inspecting the prints, the manually operable means being actuable to cause a corrected exposure of the negative currently at the exposure station, and further means are disclosed for checking the synchronism of the prints advanced to the viewing station with the second passage of the negatives through the printer. The maintenance of synchronism is checked from time to time by the fact that a splice between film orders and an order separation mark on the first or last print of a customer print order must coincide and be simultaneously detected so that a fault signal is prevented from being generated. in the event of non-coincidence, the fault signal is generated and indicates to the person at the viewing table that correspondence of the negatives with the prints must be restored.

Further apparatus of this type of which I am aware provides for the continuous advancement of the prints through the viewing station of an inspection table as the negatives are advanced through the printing station of the photographic printer. Similarly, in the event of noncoincidence of the detected splices and order separation marks, a fault signal is generated to indicate to the person at the inspection table that correspondence of the negative film and the photographic print on the print roll must be restored.

When customer film orders containing a number of photographic originals or negatives are printed, it may occur that a multiple number of prints of each negative are made since customers often request more than one print of all or certain of the negatives. Conversely, many times certain of the negatives may be determined at the time of printing to be too over-exposed or fogged or under-exposed or blank to produce an acceptable print and the number of prints in the order are less than the number of negatives. Occasionally, all of the negatives of a customer film order may be unacceptable for printing due to the aforementioned conditions occa sioned by camera malfunction, improper storage, or handling or other errors, and in such instance only one exposure is made of perhaps the last frame of the'customer film order so that an order separation mark may be placed on the single exposure to separate each series of customer print orders on the print roll. Consequently, a print roll may contain, in any sequence, customer print orders that are equal to, or less than or greater'than, the number of negatives in the corresponding customer film order. Fault signal apparatus responsive to detected splices and order separation marks of the type herebefore described require an operator to re-establish synchronism may of customer film orders to customer print orders. The continued requirement to re-establish synchronism may constitute an undue burden upon the operator of such print inspection and reprinting apparatus.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to synchronize corresponding customer film and print orders advanced through print inspection and reprinting apparatus.

Furthermore, it is an object of the present invention to establish and maintain synchronization of negatives and prints in corresponding customer film and print orders advanced through print inspection and reprinting apparatus.

It is also an object of the present invention to synchronize corresponding customer film and print orders containing fewer prints than originals advanced through print inspection and reprinting apparatus.

In accordance with these and other objects of the invention, methods and apparatus are disclosed for advancing finished photographic prints in a series of consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding photographic original in the corresponding customer original film order of a plurality of customer film orders attached together at their respective ends to form a film roll, each customer print order having a selected print associated therewith to indicate separate consecutive print orders. Furthermore, the invention comprises synchronization methods and apparatus responsive to the continuous advancement of the prints for controlling the stepwise advancement of the originals of a customer film order corresponding to the print order through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the original in the exposure station corresponding to a print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization being accomplished by: (l) detecting the continuous advancement of each print into said print inspection station and stepwise advancing an original into said exposure station in response to each detected print; (2) detecting the selected prints associated with each customer print order continuously advanced into said print inspection station and continuously advancing the originals in the customer film order through said exposure station in response to each detected print; (3) detecting the attached ends of the plurality of customer film orders; (4) halting the continuous advancement of the prints in a print order containing fewer prints than negatives after the selected print of the print order is detected; and (5) halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the corresponding original in said exposure station of said photographic printer may be reprinted with exposure corrections based on the assessment of the exposure conditions of the unacceptable print.

The synchronization method and apparatus described establishes and maintains synchronization of customer film and print orders under the following conditions: (1 corresponding full orders of prints and negatives; (2) two prints for every negative; (3) fewer prints than negatives in corresponding customer print and film orders; and (4) fewer negatives than prints in corresponding customer film and print orders.

The invention, and its object and advantages, will become more apparent in the detailed description of the preferred embodiment presented below.

BRIEF DESCRIPTION OF THE DRAWINGS In the detailed description of the preferred embodiment of the invention presented below, reference is made to the accompanying drawing in which:

FIG. 1 is a perspective view of the print inspection and remake apparatus employed in the present invention positioned upon a photographic color printer;

FIG. 2 is a diagram, in partial perspective and block diagram form, showing apparatus for maintaining synchronism between the movement of the spliced customer film orders to an exposure station of photographic color printer with the movement of corresponding finished photographic prints through an inspection station; and

FIG. 3 is a schematic illustration ofa circuit for maintaining automatic synchronism of the negatives with the finished photographic prints.

DESCRIPTION OF THE PREFERRED EMBODIMENT Before describing the invention in detail, it should be noted that FIGS. 1 and 2 and a portion of FIG. 3 are identical to those in the aforementioned commonly assigned application and their description is repeated herein to insure the complete and sufficient disclosure of the present invention.

Referring now to the drawings in first of FIG. 1, there is shown in partial perspective a view of the photographic print inspection and reprinting apparatus of the present invention detachably positioned upon a photographic color printer 10 which may be a Kodak Model 5S-3-K printer, or its equivalent. The printer may be equipped with roll paper supply and take-up magazines and apparatus for advancing a roll of photosensi-' tive photographic print material from the supply magazine through the exposure station of the photographic printer to the take-up magazine, all such components being enclosed in the light-tight cabinet 12. The color printer is also equipped with an exposure lamphouse 14 located beneath the table of the photographic printer and operative to project printing light through a negative'positioned in the printing station of the printer 10.

The printing light beam directed through the photo' graphic negative is projected by projection lens encased in the lens assembly housing 18 onto the photosensitive photographic print material located in the print exposure station within the light-tight cabinet 12.

Three subtractive primary color filters may be located within the exposure lamphouse 14 and are operative, in conjunction with associated exposure control circuits, to terminate exposure of the photosensitive print material to light of the three respective primary colors passing through the negative after respective time periods dependent upon the intensities of such primary colors of light detected by three respective primary color measuring photosensors. A keyboard assembly 20 is provided with a number of subject classification and color correction buttons that the operator of the printer may depress to alter the exposure parameters to produce a commercially acceptable print from a negative that requires classification and correction.

Because the operation and features of such photographic printing apparatus are well known in the prior art, the present description will be directed in particular to elements forming part of, or cooperating more directly with, the present invention. The Kodak Model 5S-,-3K Printer is described in greater detail in its operation manual published by the Eastman Kodak Company.

The inspection and reprint apparatus 16 comprises a detachable, unitary structure for continually advancing finished photographic prints 22 in a roll of such prints from a supply magazine 24 through a print viewing and inspection station 26 and to a print take-up magazine 28 through the action of a paper drive motor shown more particularly in FIG. 2. Adjustable width paper guides 30 are provided so that more than one paper width may be accommodated. The print inspection station 26 comprises a marking guides 32 which may be manually adjusted to accommodate prints of more than one size. A print illuminator, with light of the proper color temperature for reliable print inspection, may be provided.

A film drive assembly is also provided comprising roll film supply and take-up reels 34 and 36, respectively, a film track 38 and a film gate 40 (FIG. 2) located at the exposure station 41 of the printer 10. The negatives of each customer film order are stepwise advanced through the film gate 40 from the film supply reel 34 to the film take-up reel 36 by a tendency film drive mechanism shown in FIG. 2 and described in greater detail hereinafter. The film track 38 and film gate 40 may be readily removed are replaced in order to accommodate rolls of photographic original films of varying sizes. A magnifying lens (not shown) may be located adjacent the film gate 40 for viewing the negative image located in the film gate 40 to assist the operator in visually verifying the synchronism of the negative in the film gate to the print in the marking guide 32 and to assist the operator to determine the negative classifi cation and color correction to be entered on the keyboard switches of the keyboard assembly in making a reprint of the photographic print found to be unacceptable.

The print inspection and reprint apparatus 16 may also be provided with a number of operator controls (not shown) conveniently located and including: (1) a push-button switch to start and stop print advance; (2) a dial control to vary the rate of print advancement to suit the operators capacity to inspect the prints; (3) an over-riding push-button switch for instant change from maximum print advancement rate to 50 percent of maximum, when more time is needed to inspect the print when, for example, a sequence of prints must be made over; (4) a push-button switch for single negative advance to match a negative with a print in the print inspection station 26 requiring make-over, if there is a mismatch due to unprinted negatives, in the particular customer film order; (5) a pushbutton switch for customer print orders containing two (or more) prints for each negative, to maintain print and negative synchronization; (6) a push-button switch for reversing the paper drive in the event that the operator wishes to remake a print which has already passed the print inspection station 26; (7) a power switch; and (8) a switch to activate one or the other of dual print mark and order separation mark detectors. The enumerated controls are illustratory and others may be added for other functions suggested by the operation of the print inspection and reprint apparatus 16. The operation will be described in greater detail with respect to the film and paper advancing apparatus and the synchronization circuit 70 of FIGS. 2 and 3.

Referring now to FIG. 2, there is shown in partial perspective and block diagram form a synchronization circuit 70 and film and paper drive assemblies in cooperation with a segment 42 of film containing negatives 43 and a segment 44 of photographic prints 22. The film segment 42 is advanced from right to left through the operation of a tendency film drive assembly 46 comprising a film drive motor 48, a pair of film drive rollers 50 arranged to engage opposite surfaces of the film segment 42, a film drive solenoid 52 having a detent 54 adapted to intercept the sprocket holes 56 located adjacent each negative frame 43 when the film drive solenoid 52 is not energized, and a slip clutch 58 adapted to transmit rotary motion from the film drive motor 48 to the film drive rollers 50 when the detent 54 of the film drive solenoid 52 is withdrawn from the sprocket hole 56. Thus, upon the momentary energization of the film drive solenoid 52, the detent 54 is withdrawn from engagement with a sprocket hole 56 and the slip clutch 58 is operative to transmit rotary motion to the film drive roller 50 to advance the film segment 42 from right to left. Upon de-energization of the film drive solenoid 52, the detent 54 is released to engage the next sprocket hole 56 advancing from right to left with the.

advancement of the film segment 42 to thereby halt further film advancement through the operation of the slip clutch 58.

The paper drive assembly 60 may comprise a paper drive motor 62 adapted to impart rotary motion to a pair of paper drive rollers 64 that engage opposite surfaces of the photographic print segment 44 to advance the segment 44 continuously from right to left. The

motor 62 may be provided with appropriate controls for selectively stopping, starting, reversing and varying the rate of advancement of the paper segment 44 as mentioned hereinbefore. x

Print marks 66 are located adjacent each photographic print 22 on one border of the paper segment 44. Order separation marks 68 appear on the other border of the paper segment 44 to separate customer print orders. The print marks 66 are contact printed at the time of exposure of the corresponding photographic print, and the order separation marks 68 are contact printed adjacent the first or last (or only) prints made of negatives of a customer film order. The print marks 66 and order separation marks 68 may also be contact printed or otherwise placed on the opposite surface of the photographic print material, and such marks are normally employed in the photofinishing industry for purposes other than those disclosed with respect to the present invention.

As stated hereinbefore, it is an object of the present invention to synchronize the advancement of respective negatives 43 into the printing station of the photographic printer 10 with the advancement of the corresponding photographic print 22 into the print inspection station 26 of the print inspection and reprint apparatus 16 of the present invention. In FIG. 2, the exposure station of the photographic printer is designated by the film gate 40 and the print inspection station 26 is indicated by the marking guide 32. The remaining elements of FIGS. 2 and 3 cooperate to provide such synchronization. In brief, the stepwise advancement of the negative frames 43 into the film gate 40 is prompted by the momentary energization of the film advance solenoid 52 by the film drive signal D produced by synchronization circuit 70 in response to the detection of each of the print marks 66 by the print mark reflective pickup 72 and the production of a print mark signal A. The synchronization circuit 70 also responds to an order separation signal B and a splice signal C developed by order separation mark reflective pick-up 74 and the splice detector 76, respectively, to synchronize customer order films with their respective customer print orders in a manner to be described in greater detail hereinafter. The reflective pick-ups 72 and 74 each comprise a miniature light or radiation source 78, for example, that directs light of a predetermined wavelength upon a predetermined border area of the path of travel of the print segment 44. The light is reflected by the glossy surface of the photographic print material and upon a photosensor that is rendered conductive in direct proportion to the amount of light reflected by the surface of the print material. The amplitudes of the print mark and order separation mark signals A and B, respectively, will vary when the light from light source 78 strikes a dull or light absorbing print or order separation mark 66 or 68, respectively, on the surface of the photographic print material. Although the pick-ups 72 and 74 are shown adjacent the top surfaces of the segment 44, it will be understood that further reflective pick-ups may be positioned to intercept cut marks and order sort marks printed upon the opposite surface of the print material.

The splice detector 76 also comprises a light or radiation source and photosensor. However, the light source is located adjacent one surface of the film segment 42, and the photosensor is located adjacent the opposite surface of the film segment 42. The film segment 42 normally transmits the predetermined wavelengths of light emitted by the light source of the splice detector 76. However, splices such as splice 82 that attach ends of successive customer film orders together absorb the wavelength of light emitted by the light source of the splice detector 76 so that the photosensor of the splice detector 76 receives little or no light. The amplitude of the output signal developed by the photosensor changes in response to the change in light intensity sensed by the photosensor to develop a splice signal that is applied to the synchronization surface 70. It will be understood that the splice detector 76 may also operate in the reflective mode of operation employed by the pick-ups 72 and 74. It will also be understood that the light source could constitute a beam of light directed from the exposure lamphouse 14 of the printer upon the splice 82.

Referring now to FIG. 3, there is shown in greater detail the synchronization circuit 70 of FIG. 2. The various logical elements of the synchronization circuit of FIG. 3 respond to the print mark signal A generated by the pick-up 72, and order separation mark signal B generated by the order separation mark pick-up 74 and a splice signal C generated by the splice detector 76 to control the stepwise advancement of the negatives 43 into the film gate 40 in response to the continuous advancement of a corresponding photographic print 22 into the print inspection station 26. The synchronization circuit also responds to the aforementioned signals to establish and maintain synchronization of customer film and print orders under the following conditions: (1) corresponding full orders of prints and negatives wherein the detection of a splice immediately follows the detection of an order separation mark; (2) two prints for every negative; (3) fewer prints than negatives in a first customer print order, where the initial print mark of the initial print of a succeeding, second customer print order is detected prior to the detection of the splice connecting the respective first and second customer film orders; and (4) fewer negatives than prints in corresponding customer film and print orders wherein the detection of a splice precedes the detection of an order separation mark. The identity and function of each of the logic elements shown in the synchronization circuit of FIG. 3 are well known in the prior art. Accordingly, such logic elements shall be identified and described in conjunction with its operation in the synchronization circuit 70 under the aforementioned four conditions.

The circuit elements and operation thereof under Conditions 1, 2 and 4 correspond to those described in the aforementioned commonly assigned application Ser. No. 234,751 and are repeated here to complete the disclosure of the present invention.

CONDITION 1: FULL PRINT AND NEGATIVE ORDERS The print mark pick-up 72 is connected to amplifier 88 and a print mark signal A (assumed to be a positive going pulse) is produced at the output of amplifier 88 upon the detection of each print mark 66, and the signal A is applied to a first input terminal 90 of AND gate 92. During the normal operation of the synchronization circuit, a positive signal level will be applied to the second input terminal 94 of the AND gate 92, and the AND gate 92 gates the signal A to the C input of J-K flip-flop 98 which is connected to operate as a frequency divider and along a second conductor 100 to a first switch contact 102. Assuming that the flip-flop 98 has been reset by a signal applied to the CD input, the Q output is in the low state or level and the 6 output is in the high state or level. The signal A applied to the 0 input following the reset of the flip-flop 98 switches the Q output to the high level and theOoutput to the low level. The Q and 6 outputs are respectively connected to the K and .1 inputs of the J-K flip-flop 144, and the J-K flip-flop 98 operates in a manner well known in the prior art as each signal A applied to the C input switches the output Q orOhaving a high level at its input J or K, respectively, to the high level.

Thus, the -I- 2 flip-flop 98 responds to every other print mark signal pulse A to produce a print mark signal All at the second switch contact 104 (connected to the Q output of flip-flop 98) having a frequency of pulse repetition equal to half that of the signal A. Under Condition 1, a movable switch blade 106 contacts the first switch contact 102 to apply only the signal A to a pulse shaping single shot 108 which is necessary to provide a pulse of constant duration in response to each signal A or A/2. The signal A is applied along a first conductor to the first input terminal 110 of AND gate 1 12 and by a second conductor to a time delay circuit 116. The time delay circuit 116 delays the signal A for a predetermined time and applies it by conductor 118 to the S input of R-S flip-flop 120. The R-S flip-flop 120 responds to the time delayed print mark signal A to switch (or maintain) the level at the Q output of the R-S flip-flop 120 to a high state. The high state or level of the Q output of the flip-flop 120 is transmitted by conductor 122 to the second input terminal 124 of AND gate 112.

The time delay circuit 116, the flip-flop 120 and the AND gate 112 are provided to prevent the first signal A that is produced, in time, after an order separation mark signal B is produced from initiating a negative advance. As described in greater detail hereinafter, the signal B, after amplification and gating, is applied to the R input of the R-S flip-flop 120 to switch the Q output of the fiip-flop 120 to its low state. However, first signal A following the signal B is delayed in time by the time delay 1 16 and switches the Q output of the flip-flop 120 to its high state only after the signal A applied to terminal 110 of gate 112 has disappeared. Thus, no signal will be passed through gate 112 at this time.

However, the second pulse of the signal A, which will occur after the Q output from flip-flop 120 has been restored to its high level, will be gated by AND gate 112 to the T INPUT of the film drive single shot 126. The single shot 126 responds to the signal A to produce a first film drive signal D, which is a positive-going pulse having a constant duration determined by the single shot 126, and the first film drive signal D is applied to a first input terminal 128 of OR gate 130. OR gate 130 gates the first film drive signal D to the film drive solenoid 52 to energize the film solenoid 52 in the manner described hereinbefore with respect to FIG. 2. The film drive solenoid 52 is energized for a period of time sufficient to allow the release and advancement of the negative film,

Thus the logic elements described so far provide for the stepwise advance of the negatives of the film into the film gate 40 in response to the detection of each of the cut marks 66 except the first cut mark on the first print of a customer print order following an order sort mark.

The signal B produced by the order separation mark pick-up 74 and amplifier 134 is also a positive going pulse signal, and it is applied to a first input terminal 136 of AND gate 138. Normally a positive or high level occurs at the second input terminal 140 of the AND gate 138, and the signal B is applied as described hereinbefore to the R input of the flip-flop 120 and is also applied by a conductor 142 to the S input of the R-S flip-flop 144. Assuming that the flipflop 144 has been reset by a signal applied to the R input, the Q output is in the low state or level and the Q output terminal is in the high state or level. The signal B applied to the C input following the reset of the flip-flop 144 switches the Q output terminal to the high level and the Goutput to the low level.

The high level of the Q output of the flip-flop 144 is applied by conductor 150 to a Pulse Extend circuit 156 which produces a second film drive signal E having a period extending beyond that of the high level of the output of flip-flop 144. The second film drive signal E is applied to the second input terminal 132 of OR gate 139 and through OR gate 130 to the film drive assembly 46 to turn off film drive in response thereto.

Thus, upon each occurrence of an order separation mark signal B, the film drive solenoid 52 is energized by the second film drive signal E for a period of time dependent upon the period of time that the Q output of the flip-flop 144 remains in the high level, that is, until the detection ofa splice 82, as described hereinafter, and a period of time following the detection of a splice determined by the Pulse Extend circuit 156. The effect of the signal B is to energize the film drive solenoid 52 so that any remaining negatives in the customer film order corresponding to the print order from which the signal B is produced are continuously driven through the film gate. The continuous film motion is halted after the time period of the Pulse Extend circuit 156 expires by the detection ofa splice and the production of a splice signal C.

The splice signal C generated by splice detector 76 and amplified by amplifier 160 is also a transitory positive going pulse that is applied to a first input terminal 162 of AND gate 166. The second input terminal 164 of AND gate 166 is normally at a positive level, so that the splice signal C is gated to the S input of R-S flip-flop 168. As in the description of operation of flip-flop 144, presumably the Q output terminal of flip-flop 168 has been previously switched to the high level. When a splice signal C is applied to the S input, the Q output is switched to the high level.

It will be recalled that the 0 output of the flip-flop 144 has been previously set to a high level by a signal B. The Q outputs of the flip-flops 144 and 168 are connected to the input terminals of AND gate 170. After both Q outputs of the flip-flops 144 and 168 are switched to the high level, the AND gate 170 passes a high level signal to the Trigger T input of a reset single shot 174. The reset single shot 174 responds to the high input level to generate a reset signal F which is applied to the CD input of the flip-flop 98 and the R inputs of the flip-flops 144 and 168 via conductor 176. The reset signal F therefore switches the Q outputs of the flipflops 144 and 168 to the low level. After a time period dependent upon the time period of the Pulse Extend circuit 156, the second film drive signal E is terminated, and the film drive solenoid 52 is tie-energized.

It will be recalled that the time delay element 116, flip-flop and AND gate 112 are provided to prevent the first print mark signal A following, in time, an order separation mark signal B from energizing the film drive solenoid 52. The reason that the first print mark signal A is thus inhibited is because the second film drive signal E is of such duration (insured by the Pulse Extend circuit 156) that a film splice detected one negative frame length before the film gate 40, (Fig. 2), is advanced through the film gate 40 without stopping. Thus, the first negative of a second, succeeding, customer film order is positioned in the film gate 40 through the operation of the second film drive signal E and the first film drive signal D that would be produced in response to the first cut mark signal A is unnecessary.

When Condition 1 persists for successive corresponding customer film and print orders, the final print mark 66 adjacent the final print 22 of the first customer print order will be detected as the final print 22 advances into the print inspection station 26. Simultaneously, as described hereinbefore, the first, film drive signal D generated inresponse to the signal A will advance the final negative of the first customer film order into the film gate 40. An order separation signal B is generated in response to the detection of an order separation mark 68 on the border adjacent the final print 22 as it advances into the inspection station 26. Shortly following the generation of the last signal A of the first print order, as described hereinbefore, the second film drive signal E is generated in response to the signal B.

The second film drive signal E causes the film drive assembly 46 to advance the splice 82 past the splice detector 76 and through the film gate 40. When the splice signal C is generated by the splice detector 76, the reset signal F is generated to terminate the second film advance signal B after the time period of the Pulse Extend circuit 156 elapses. After the second film drive signal E terminates, the film will continue to advance until the detent 54 of the film drive solenoid 52 catches the next sprocket hole 56 positioning the first negative of the second customer film order in the film gate 40. At the same time, the first print 22 of the second customer print order advances past the pick-up 72 and into the print inspection station 26. Since the first signal A does not produce a first film advance signal D, the step-wise advancement of the second negative in the second customer film order into the film gate 40 is not initiated until the print mark 66 of the second print of the second customer print order advances past ehe pick-up 72 and into the print inspection station 26.

Thus, as succeeding customer film and print orders satisfying Condition 1 advance, a signal B immediately follows the signal A as the last print in the customer print order advances to the print inspection station 26, and a splice signal C immediately follows the signal B, as the splice is advanced past the splice detector 76 and through the film gate 40.

In the event that the operator observes an unacceptable print entering the print inspection station 26, the operator depresses a push button switch to stop print advance and marks the print located between marking guides 32 with a visual indication that it is unacceptable. The operator thereafter observes the negative image in the film gate 40 to insure that it corresponds to the print and to determine the color correction or exposure classification necessary to produce an acceptable print. The operator may also observe the exposure code printed on the border of the unacceptable print to determine the exposure conditions employed in the initial printing of the negative. After making his judgment of the negative and the print, the operator enters his subject classification and color corrections on the keyboard assembly 20 and reprints the negative by exposing the photosensitive paper in the light-tight cabinet 12 to light transmitted by the negative in the manner well known in the art. After the exposure is complete,

the operator again depresses the push button switch to start print advance and to continue the inspection of the roll of prints.

CONDITION 2: TWO PRINTS PER NEGATIVE Under this condition, the synchronization circuit operates in the same manner as described with respect to Condition 1. However, occasionally, the customer requests or the photofinisher decides to give all customers more than one print, usually two prints, of each negative in the customer film order. In this instance, the operator of the print inspection and reprint apparatus 16 observes that the print roll contains two prints per negative and changes the connection of the switch blade 106 by means of a push button from the first contact 102 to the second contact 104 to connect the 2 flip-flop 98 to the pulse shaping single shot 108. The 2 flip-flop 98 is thus rendered effective to direct alternate print mark signals A to the single shot 108 and through the remaining circuit elements to produce a first film drive signal D having a frequency equal to half that of the print mark signal A. Thus the negatives are stepwise advanced as every other print mark 66 is detected by the pick-up 72. Synchronization is thereby maintained between the advancement of the two prints for every negative through the inspection station 26.

CONDITION 3: FEWER PRINTS THAN NEGATIVES As noted earlier, during the first passage of the negative through the photographic printer, either the operator of the printer or automatic sensing circuits may determine that certain negatives in a customer film order are too overexposed or under-exposed or are fogged or blank and are therefore unsuitable for printing. Consequently, the customer print order may contain fewer prints than negatives in the corresponding customer film order. For example, out of a customer film order of 20 negatives perhaps three are not printed, and the corresponding print order contains only 17 prints. As the 17th print of the print order advances through the print inspection station 26, the 17th negative is advanced to the film gate 40 as described hereinbefore with respect to Condition 1. Shortly thereafter, an

order separation mark 68 is detected adjacent the l7the frame, and a signal B is generated by the th 74. As described hereinbefore with respect to FIG. 3, the signal B is amplified and applied to the R input of flipflop 120 and the S input of flip-flop 144. The Q output of the flip-flop 144 switches to the high level, and a second film drive signal E is generated in a manner hereinbefore described to continuously advance the remaining three negatives of the customer film order through the film gate 40 'until such time as a splice 82 is sensed by splice detector 76.

The splice 82 segment advances past the film gate 40 in the manner hereinbefore described, and positions the first negative of the succeeding customer film order in the film gate 40. However, unless advancement of the print segment 44 is halted, it will have also continued to advance into thenext print order. The synchronization of the print 22 with the negative of the next customer order could therefore be disrupted by one or more negatives dependent upon the rate of advancement of the paper segment 44, the rate of continuous advancement of the remaining negatives of the first customer film order and the difference between the number of prints and negatives in the first customer print and film order.

The synchronization circuit of the aforementioned commonly assigned application Ser. No. 234,751 relies upon the re-establishment of synchronization by the operator responding to unacceptable prints or the eventual re-establishment of synchronization since the rate of continuous film advance exceeds that of the prints.

The synchronization circuit of this invention includes a circuit for causing the continuous print advancement to halt when the first print signal A of a second print order precedes the splice signal C developed in response to the detection of the splice attaching the ends of the corresponding first and second film orders. This indicates that the prints in the second print order are ahead of the corresponding negatives, and that print advance should be stopped as the first print enters the print inspection station 26 until the splice advances through the film gate 40.

To accomplish this, the Q output of flip-flop 144 is coupled by conductor 178 to a time delay circuit 180. The time delay circuit 180 delays the application of the high level of the Q output of flip-flop 144 to the first input terminal 182 of AND gate 184. The Q output of flip-flop is coupled by conductor 186 to the second input terminal 188 of the AND gate 184. The output terminal of AND gate 184 develops a signal G when both the Q outputs of flip-flops 120 and 144 are high after the time period of time delay 180. The signal G is applied to the print drive assembly 60 to halt print drive in response thereto. Time delay circuit provides a short time delay sufficient to insure that possible unequal switching times of flip-flops 120 and 144 in response to signal B do not generate a signal G.

When there are fewer prints in a print order than negatives in the corresponding film order, a signal B, developed as the last print of the short print order enters the print inspection station 26, sets the Q outputs of the flip-flops .120 and 144 to their low and high levels, respectively. The high level of the Q output of flip-flop 144 produces a second film drive signal E that initiates continuous film advance. After a time delay provided by time delay circuit 180, the high level is also applied to the first input terminal 182 of AND gate l84.'Since the Q output of flip-flop 120 is low, and the low level appears at the second input terminal 188, AND gate 184 continues to be incapable of applying signal G to the paper drive assembly 60. Consequently, continuous film and print advance continues.

Thereafter, the next signal to be developed under this Condition is a print signal A produced as the first print of the next customer print order enters the print inspection station 26. The signal A is delayed by time delay circuit 1 16, but then it sets the Q output of flip-flop 120 to the high level. AND gate 138 is thereafter effective to develop signal G which halts continuous print advance upon the entry of the first print of the second print order into the print inspection station.

Continuous film advance continues, however, under the control of the second film drive signal E until a splice 82 attaching the ends of the corresponding first and second film orders is detected. As described hereinbefore with respect to Condition 1, a reset signal F is developed when the Q output of flip-flop 168 is switched to the high level in response to the splice signal C.

Film advance continues after flip-flops 144 and 168 are reset until the first negative of the second customer film order reaches film gate 40 and paper advance restarts after the expiration of the time delay provided by time delay circuit 180. Thereafter, the prints and negatives of the second print and film orders advance in synchronism in the manner described with respect to Conv dition 1.

CONDITION 4: FEWER NEGATIVES THAN PRINTS In case this Condition should arise, the splice signal C is produced before an order separatitm signal B is produced, and the signal C switches the Q and Q outputs of the flip-flop 168 to the low and high levels, respectively. The Qoutput of flip-flop 168 is connected by conductor 190 to the cond input terminal 94 of AND gate 92. When the Q output of the flip-flop 168 is switched to the low level, the AND gate 92 is rendered incapable of gating further print mark signals A through the further elements of the circuit to the film drive single shot 126, and no further first film drive signals D will be produced. Thus, film motion is halted as soon as the detent 54 of the film drive solenoid 52 engages a sprocket hole in the film. In this situation, the splice 82 may not be advanced all the way through the film gate 40.

The prints in the corresponding customer print order continue to advance through the print inspection station 26, and any further signals A are ineffective to advance the film. Thereafter, a signal B is produced in response to the detection of the order separation mark on the last print in the customer print order advanced to the print inspection station 26. The signal B is applied to the S input of the flip-flop 144 to switch the Q output of the flip-flop 144 to the high level in the manner described hereinbefore. The high level of the Q output is transmitted by the Pulse Extend circuit 156 to produce a second film drive signal E. The second film drive signal E initiates the continued advancement of the splice 82 through the film gate 40. The AND gate 170 responds to the high levels of the Q outputs of the flip flops 144 and 168 to trigger the reset single shot 174 which produces a reset signal F. Thus, upon the detection of the signal B, the film advance is initiated to continue for the time extension period of the Pulse Extend circuit 156, and the Qoutputs of the flip-flops 144 and 166 are switched to the high level. When the 6 output of the flip-flop 168 resumes the high level, the AND gate 92 is rendered operative to gate the print mark signals A of the succeeding print order through the circuit to trigger the film drive single shot 126 to produce the respective first film drive signal D. The synchronization circuit continues to operate in the manner described with respect to Condition 1.

Under the assumed Condition, the synchronization of prints and negatives within an order is lost and, if the operator finds it necessary to make a reprint of an unacceptable print, he halts the advancement of the unacceptable print in the print inspection station 26 and observes the negative in the film gate 40 to correlate it to the other prints in the customer print order. Under this Condition, the corresponding negative is ahead, in the path of travel, of the unacceptable print. A further control may be provided for the operators convenience to selectively reverse the stepwise advancement of the negatives through the film gate 40 until the corresponding negative is positioned in the film gate 40. Otherwise, the operator may have to manually pull the negatives from left to right through the film gate 40 to reach the proper negative.

CONCLUSION Thus, there has been shown print inspection and reprint apparatus for attachment to a photographic printer including roll film and roll paper advancing apparatus for stepwise advancing each negative of customer film orders through the film gate of the photographic printer and for continuously advancing each print in the customer print orders on the print roll through an inspection station under the control of a circuit for maintaining synchronization between the respective print and film orders. The synchronization circuit is effective to automatically maintain or reestablish synchronization between corresponding print and film orders, and the design of the synchronization circuit economically maintains continuous print advancement under most conditions. While exact synchronization between each negative and print in each customer film and print order cannot be maintained under all conditions, the synchronization circuit makes it possible for the operator to readily locate the negative corresponding to an unacceptable print.

As stated hereinbefore, reflective print and order separation mark pick-ups may be provided on opposite surfaces of the photographic print material to detect the respective marks printed on either side. It will be apparent also that such reflective pick-ups may be provided in alternate positions to detect the respective marks if the order separation mark is printed upon the first print in each customer print order advanced into the inspection station.

Furthermore, it should be noted that film types other than that film segment 42 shown in FIG. 2 may be accommodated by the print inspection and reprint apparatus through the use of 'a film drive assembly other than film drive assembly 46 but suitable for controlling the stepwise advancement of each negative through the film gate 40.

Furthermore, it is within the scope of this invention to re-orient the position of the elements of FIG. 2 and change the direction of movement of the paper and film through the print inspection and reprinting apparatus.

Although the logic elements employed in the synchronization circuit 70 have been responsive to positive going or high levels, it will be apparent that negative going signal and low level responsive logic elements may be substituted for those shown where appropriate.

The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications can be effected within the spirit and scope of the invention.

1 claim:

1. A method for synchronizing the advancement of photographic originals in at least first and second customer original film orders attached at the ends of each customer original film order into the exposure station of a photographic printer in synchronism with the advancement of finished photographic prints in at least first and second corresponding customer print orders on developed print material through a print inspection station when the number of prints in the first print order is less than the number of originals in the first customer print order to inspect the prints to detect commercially unacceptable prints and to reprint said unacceptable prints with the correction necessary to produce an acceptable print, said synchronization method comprising the steps of:

a. detecting the continuous advancement of each print in the first and second customer print orders into said print inspection station and stepwise advancing an original into said exposure station in response to the detection of each print;

b. detecting the continuous advancement into said print inspection station of at least one selected print associated with each customer print order to separate the first and second customer print orders;

c. detecting the stepwise advancement of the attached ends of the first and second customer film orders into said exposure station;

d. halting the continuous advancement of the prints into said print inspection station upon the detection of a print of the second customer print order prior to the detection of the attached ends of the corresponding first and second customer film orders and continuously advancing the first and second customer film orders through said exposure station until the detection of the attached ends of the first and second customer film orders in sequence; and

. halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the original in said exposure station of said photographic printer corresponds to the unacceptable print when the number of prints in the customer print order containing the unacceptable print equals the number of originals in the corresponding customer film order, whereby the corresponding original may be reprinted with exposure corrections based on the assessment of the exposure of the unacceptable print.

2. In photographic apparatus for advancing finished photographic prints in a series of consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding photographic original in the corresponding customer original film order of a plurality of customer film orders attached together at their respective ends to form a film roll, each customer print order having a selected print associated therewith to indicate separate consecutive print orders; the improvement comprising synchronization apparatus responsive to the continuous advancement of the prints for controlling the stepwise advancement of the originals of a customer film order corresponding to the print order through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the original in the exposure station corresponding to a print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising:

a. means for detecting the continuous advancement of each print into said print inspection station and for stepwise advancing an original into said exposure station in response to each detected print;

b. means for detecting the selected prints associated with each customer print order continuously advanced into said print inspection station and for continuously advancing the originals in the customer film order through said exposure station in response to each detected print;

means for detecting the attached ends of the plurality of customer film orders and for halting the continuous advancement, initiated by said selected print detecting means, of the originals in the customer film order through said exposure station after the detected attached end is advanced through said exposure station;

d. means responsive to the detection of both a selected print of a first customer print order and a print of a second consecutive customer print order on the print roll prior to the detection of the attached ends of corresponding first and second customer film orders for halting continuous print advance until the attached ends of the first and second customer film orders are detected; and

. means for halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the corresponding original in said exposure station of said photographic printer may be reprinted with exposure corrections based on the assessment of the expo-' sure conditions of the unacceptable print.

3. The synchronization apparatus of claim 2 further comprising means for varying the rate of continuous advancement of the prints through said print inspection station.

4. The synchronization apparatus of claim 2 further comprising means responsive to the means for detecting the attached ends of the plurality of customer film orders for preventing the stepwise advancement of the originals into said exposure station by said means for detecting the prints.

5. The synchronization apparatus of claim 2 wherein a customer print order contains a greater number of prints than the number of corresponding originals in the corresponding customer film order and further comprising:

a. means responsive to the means for detecting the attached ends of the plurality of customer film orders for preventing the stepwise advancement of the originals into said exposure station by said means for detecting the prints; and

b. means responsive to said means for detecting the selected prints for advancing a detected attached end through said exposure station until an original in the next customer film order adjacent said attached end is positioned in said exposure station;

whereby the stepwise advancement of the'originals is halted for the period of time between the detection of the attached end of the customer film order and the selected print of the corresponding customer print order.

6. In photographic apparatus for advancing finished prints in a series including at least first and second consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding negative in the corresponding customer film order of a plurality including at least first and second consecutive customer film orders attached together at their respective ends to form a film roll, each print having a first mark associated therewith on the print material and each customer print order having a second mark associated therewith on the print material; the improvement comprising synchronization apparatus responsive to the continuous advancement of the prints for controlling the stepwise advancement of the negatives of a customer film order corresponding to the prints through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the negative corresponding to a print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising:

a. means for detecting the first marks associated with said prints continuously advanced through said print inspection station and for stepwise advancing a negative into said exposure station in response to each detected first mark;

b. means for detecting the second marks associated with the first customer print order continuously advanced through said print inspection station and the attached ends of the first and second of customer film orders for continuously advancing the remaining negatives in the first customer film order and the attached ends of the first and second customer film orders through said exposure station until the first negative of the second customer film order is advanced into said exposure station when the detection of the second mark associated with the first customer print order precedes, in time, the detection of the attached ends of the first and second customer film orders and for halting the continuous advancement of the prints into said print inspection station when the detection of both the second mark of the first customer print order and a first mark of the second customer print order precedes, in time. the detection of attached ends of the 7. The synchronization apparatus of claim 6 further comprising means responsive to said means for detecting the first and second marks for preventing said means for stepwise advancing the negatives from responding to the detected first mark immediately following, in time, a detected second mark.

8. The synchronization apparatus of claim 6 further comprising means for varying the rate of continuous advancement of the prints through said print inspection station.

9. The synchronization apparatus of claim 6 wherein a customer print order contains two prints made from each negative in the corresponding customer film order, and wherein said means for detecting the first marks is selectively operable to detect alternate first marks associated with alternate prints for stepwise advancing each negative into said exposure station in response to each detected first mark.

10. In photographic apparatus for advancing finished color prints in a series including at least first and sec ond consecutive-customer print orders on a roll of developed print material through a print inspection station for inspecting the color prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding color negative in the corresponding customer film order of a plurality including at least first and second consecutive customer film orders spliced together at their respective ends to form a film roll; the improvement comprising synchronization apparatus responsive to continuous advancement of the color prints for controlling the stepwise advancement of the color negatives of a customer film order corresponding to the color prints through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the color negative corresponding to a color print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising:

a. means for detecting the continuous advancement of each color print into said print inspection station and for stepwise advancing a color negative into said exposure station in response to each detected color print;

b. means for detecting a selected color print associated with each customer print order continuously advanced into said print inspection station and the spliced ends of the plurality of customer film orders for:

l. halting the stepwise advancement of the color negatives into said exposure stationwhen the'detection of the spliced ends of first and second consecutive customer film orders precedes, in time, the detection of the selected color prints associated with the corresponding first customer print order;

. continuously advancing the remaining color negatives in the first customer film order and the spliced ends of the first and second customer film orders through said exposure station until the first color negative of the second customer film order is advanced into said exposure station when the detection of the selected color print associated with the first customer print order precedes, in time, the detection of the spliced ends of the first and second customer film orders; and

. halting the continuous advancement of the color prints into said print inspection station when the detection of both the selected color print associated with the first customer print order and a print of the second customer print order precedes, in time, the detection of the spliced ends of the first and second customer film orders and for continuously advancing the first and second customer film orders through said exposure station until the detection of the spliced ends of the first and second customer film order; and

- c. means for halting the continuous advancement of acceptable print. 

1. A method for synchronizing the advancement of photographic originals in at least first and second customer original film orders attached at the ends of each customer original film order into the exposure station of a photographic prinTer in synchronism with the advancement of finished photographic prints in at least first and second corresponding customer print orders on developed print material through a print inspection station when the number of prints in the first print order is less than the number of originals in the first customer print order to inspect the prints to detect commercially unacceptable prints and to reprint said unacceptable prints with the correction necessary to produce an acceptable print, said synchronization method comprising the steps of: a. detecting the continuous advancement of each print in the first and second customer print orders into said print inspection station and stepwise advancing an original into said exposure station in response to the detection of each print; b. detecting the continuous advancement into said print inspection station of at least one selected print associated with each customer print order to separate the first and second customer print orders; c. detecting the stepwise advancement of the attached ends of the first and second customer film orders into said exposure station; d. halting the continuous advancement of the prints into said print inspection station upon the detection of a print of the second customer print order prior to the detection of the attached ends of the corresponding first and second customer film orders and continuously advancing the first and second customer film orders through said exposure station until the detection of the attached ends of the first and second customer film orders in sequence; and e. halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the original in said exposure station of said photographic printer corresponds to the unacceptable print when the number of prints in the customer print order containing the unacceptable print equals the number of originals in the corresponding customer film order, whereby the corresponding original may be reprinted with exposure corrections based on the assessment of the exposure of the unacceptable print.
 2. In photographic apparatus for advancing finished photographic prints in a series of consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding photographic original in the corresponding customer original film order of a plurality of customer film orders attached together at their respective ends to form a film roll, each customer print order having a selected print associated therewith to indicate separate consecutive print orders; the improvement comprising synchronization apparatus responsive to the continuous advancement of the prints for controlling the stepwise advancement of the originals of a customer film order corresponding to the print order through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the original in the exposure station corresponding to a print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising: a. means for detecting the continuous advancement of each print into said print inspection station and for stepwise advancing an original into said exposure station in response to each detected print; b. means for detecting the selected prints associated with each customer print order continuously advanced into said print inspection station and for continuously advancing the originals in the customer film order through said exposure station in response to each detected print; c. means for detecting the attached ends of the plurality of customer film orders and for halting the continuous advancement, initiated by said selected print detecting means, of the originals in the customer film order through said exposure station after the detected attached end is advanced through said exposure station; d. means responsive to the detection of both a selected print of a first customer print order and a print of a second consecutive customer print order on the print roll prior to the detection of the attached ends of corresponding first and second customer film orders for halting continuous print advance until the attached ends of the first and second customer film orders are detected; and e. means for halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the corresponding original in said exposure station of said photographic printer may be reprinted with exposure corrections based on the assessment of the exposure conditions of the unacceptable print.
 2. continuously advancing the remaining color negatives in thE first customer film order and the spliced ends of the first and second customer film orders through said exposure station until the first color negative of the second customer film order is advanced into said exposure station when the detection of the selected color print associated with the first customer print order precedes, in time, the detection of the spliced ends of the first and second customer film orders; and
 3. halting the continuous advancement of the color prints into said print inspection station when the detection of both the selected color print associated with the first customer print order and a print of the second customer print order precedes, in time, the detection of the spliced ends of the first and second customer film orders and for continuously advancing the first and second customer film orders through said exposure station until the detection of the spliced ends of the first and second customer film order; and c. means for halting the continuous advancement of a commercially unacceptable color print within the print inspection station, whereby the color negative in said exposure station of said photographic printer corresponds to the unacceptable color print when the number of color prints in the customer print order containing the unacceptable color print equals the number of color negatives in the corresponding customer film order, and the color negative may be reprinted with exposure corrections based on the assessment of the exposure of the unacceptable print.
 3. The synchronization apparatus of claim 2 further comprising means for varying the rate of continuous advancement of the prints through said print inspection station.
 4. The synchronization apparatus of claim 2 further comprising means responsive to the means for detecting the attached ends of the plurality of customer film orders for preventing the stepwise advancement of the originals into said exposure station by said means for detecting the prints.
 5. The synchronization apparatus of claim 2 wherein a customer print order contains a greater number of prints than the number of corresponding originals in the corresponding customer film order and further comprising: a. means responsive to the means for detecting the attached ends of the plurality of customer film orders for preventing the stepwise advancement of the originals into said exposure station by said means for detecting the prints; and b. means responsive to said means for detecting the selected prints for advancing a detected attached end through said exposure station until an original in the next customer film order adjacent said attached end is positioned in said exposure station; whereby the stepwise advancement of the originals is halted for the period of time between the detection of the attached end of the customer film order and the selected print of the corresponding customer print order.
 6. In photographic apparatus for advancing finished prints in a series including at least first and second consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding negative in the corresponding customer film order of a plurality including at least first and second consecutive customer film orders attached together at their respective ends to form a film roll, each print having a first mark associated therewith on the print material and each customer print order having a second mark associated therewith on the print material; the improvement comprising synchronization apparatus responsive to the continuous advancement of the prints for controlling the stepwise advancement of the negatives of a customer film order corresponding to the prints through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the negative corresponding to a print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising: a. means for detecting the first marks associated with said prints continuously advanced through said print inspection station and for stepwise advancing a negative into said exposure station in response to each detected first mark; b. means for detecting the second marks associated with the first customer print order continuously advanced through said print inspection station and the attached ends of the first and second of customer film orders for continuously advancing the remaining negatives in the first customer film order and the attached ends of the first and second customer film orders through said exposure station until the first negative of the second customer film order is advanced into said exposure station when the detection of the second mark associated with the first customer print order precedes, in time, the detection of the attached ends of the first and second customer film orders and for halting the continuous advancement of the prints into said print inspection station when the detection of both the second mark of the first customer print order and a first mark of the second customer print order precedes, in time, the detection of attached ends of the corresponding first and second customer film orders; and c. means for halting the continuous advancement of a commercially unacceptable print within the print inspection station, whereby the negative in said exposure station of said photographic printer corresponds to the unacceptable print when the number of prints in the customer print order containing the unacceptable print equals the number of negatives in the corresponding customer film order, and the negative may be reprinted with exposure corrections based on the assessment of the exposure of the unacceptable print.
 7. The synchronization apparatus of claim 6 further comprising means responsive to said means for detecting the first and second marks for preventing said means for stepwise advancing the negatives from responding to the detected first mark immediately following, in time, a detected second mark.
 8. The synchronization apparatus of claim 6 further comprising means for varying the rate of continuous advancement of the prints through said print inspection station.
 9. The synchronization apparatus of claim 6 wherein a customer print order contains two prints made from each negative in the corresponding customer film order, and wherein said means for detecting the first marks is selectively operable to detect alternate first marks associated with alternate prints for stepwise advancing each negative into said exposure station in response to each detected first mark.
 10. In photographic apparatus for advancing finished color prints in a series including at least first and second consecutive customer print orders on a roll of developed print material through a print inspection station for inspecting the color prints to detect commercially unacceptable prints and to reprint, with the correction necessary to produce an acceptable print, the corresponding color negative in the corresponding customer film order of a plurality including at least first and second consecutive customer film orders spliced together at their respective ends to form a film roll; the improvement comprising synchronization apparatus responsive to continuous advancement of the color prints for controlling the stepwise advancement of the color negatives of a customer film order corresponding to the color prints through the exposure station of a photographic printer associated with the print inspection apparatus, whereby the color negative corresponding to a color print found to be commercially unacceptable may be reprinted in the photographic printer, said synchronization apparatus further comprising: a. means for detecting the continuous advancement of each color print into said print inspection station and for stepwise advancing a color negative into said exposure station in response to each detected color print; b. means for detecting a selected color print associated with each customer print order continuously advanced into said print inspection station and the spliced ends of the plurality of customer film orders for: 